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Speedometer only goes to 180kph

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TwoDogs
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2017/05/05 15:30:20 (permalink)
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Speedometer only goes to 180kph

 Hi,
 my Sw20 3sgte speedo only goes to 180kph which seems barely adequate, especially if one is to raise one's boost
or on a track day with a reasonable straight eg Eastern Ck, P.I or Bathurst.
 Is that normal or do I have an NA speedo?
 
cheers,
#1


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    rikkir
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    Re: Speedometer only goes to 180kph 2017/05/05 15:47:43 (permalink)
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    JDM speedos are 180kph.
    Australian delivered cars are 260kph

        Silver 1997 SW20 Bathurst with      

    #2
    TwoDogs
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    Re: Speedometer only goes to 180kph 2017/05/05 15:57:40 (permalink)
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    Thanks Rikkir,
    I will have a look and see if there is a stop, or whether the needle keeps rotating.
    Might test it on the way home tonight - M1       :o)    maybe not.
     
    #3

    Kook
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    Re: Speedometer only goes to 180kph 2017/05/05 16:31:52 (permalink)
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    JDM will be speed limited to 180 anyway, don't think aus delivered were.
    #4
    TwoDogs
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    Re: Speedometer only goes to 180kph 2017/05/05 16:37:34 (permalink)
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    Really, how does it do that ? Rev limiter ?
    I don't mind a rev limiter, but a speed limiter ? in 5th only ?
    Might have to get massive rear wheels to raise the gearing a ton....   :o)
    #5
    Phiz
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    Re: Speedometer only goes to 180kph 2017/05/05 16:45:47 (permalink)
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    You'll find all jap imports, silivas, evo's, skylines, mr2's.. all have a limit of 180. 
     
    Just how there rules work in japan. If you have a standard ecu it will limit there, theres a speed cut defender you can get to fix it, or you can get a standalone ecu.
    #6

    TwoDogs
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    Re: Speedometer only goes to 180kph 2017/05/05 16:54:27 (permalink)
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    Thanks Phiz,
    does the ECU know what gear I'm in...? 
    or is it a rev limiter, which is not a bad thing
    #7
    5SGTE
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    Re: Speedometer only goes to 180kph 2017/05/05 20:40:20 (permalink)
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    Based on wheel/gearbox speed and engine speed most ecus will assume/know gear selection as far as I know.  Anyway the factory ecu has a speed reference from the speedo.
    #8
    Kook
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    Re: Speedometer only goes to 180kph 2017/05/06 14:33:03 (permalink)
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    I've heard rumours of the speed cut defenders making the ecu think it's going really slow so your steering is suddenly really sensitive. I don't have one so don't know for sure.

    Can a piggy back ecu by pass it? Or does it have to be standalone?
    #9
    Admin
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    Re: 2017/05/08 20:46:35 (permalink)
    +1 (1)
    Hey two dogs, you won't be looking at your speedo when on the track. If you can look at your speedo, you are driving too slow! 😊

    #10
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